Dry Type Transformers

Dry Type Transformer

Dry Type Transformer

 

Up to 20 MVA, 46 kV Class, 200 kV BIL

Transformer Testing

Prior to shipment, all of our transformers are tested in accordance with applicable standards
that match customer specifications. All tests are performed in our testing facility by skilled
quality control technicians to ensure a high quality and reliable transformer.

Standard Production Tests

  • Winding Resistance Measurements
  • Ratio and Polarity Measurements
  • Exciting Current and No Load Loss
  • Measurements
  • Impedance and Load Loss Measurements
  • AC Dielectric Test
  • Induced Voltage Test
  • Core Ground Test

Standard Production Tests

Standard Production Tests

 

Optional Transformer Tests

Optional Transformer Tests

 

Optional Transformer Tests

  • Temperature Rise
  • Sound Level
  • Radio Influence Voltage
  • Partial Discharge (Corona)
  • Basic Insulation Impulse Level

 

INSULATION SYSTEM
Standard : Polyester Varnish Class 220°C Insulation SystemWINDING TEMPERATURE RISE
Standard : Average Winding Rise 150°C
Option : Average Winding Rise 115°C or 80°CTYPE OF COOLING
Standard : ANN Natural Convection Cooling
Options : ANN/AFN Natural Convection Cooling plus Forced Air Cooling with Fans to obtain 33% additional capacity
ANC Totally Enclosed Unit

WINDING MATERIAL
Standard : Copper
Options : Aluminum
Combination of Copper and Aluminum

TAPS AND TAP CHANGER
Standard : Off Load Tap 2 -2.5% FCAN and 2-2.5% FCBN Tap Links and Terminal Board
Option : Designed to customer specification
On-Load Tap Changer

TERMINATIONS
Standard : HV and LV Stubs Up
Option : Bussed to customer specification or coordinated to switchgear
Side Cable Boxes for Top Cable Entry

BASIC IMPULSE LEVELS
Standard : Designed to CSA Standard C9 and C22.2 No. 47
Standard
Option : Higher Basic Impulse Level to customer
specification

TYPE OF ENCLOSURE
Standard : EEMAC 1 Indoor Ventilated
Options : EEMAC 2 Sprinkler/Drip Proof Ventilated
EEMAC 3 Weatherproof Outdoor Filtered
Ventilated/Enclosed
EEMAC 4 Non-VentilatedCOLOUR OF ENCLOSURE
Standard : ASA 61 Grey Interior and Exterior
Option : Painted to customer specification

IMPEDANCE RANGE
Standard : Designed to CSA Standard C9 and C22.2 No. 47
Standard Impedance Range
Option : Designed to customer specification subject to
constructional and Short Circuit Performance
constraints

AVERAGE AUDIBLE SOUND LEVEL
Standard : Designed to CSA Standard C9 and C22.2 No. 47
Average Audible Sound Level
Option : Designed to customer specification subject
to physical constraints

TESTS
Standard : All Production Tests per CSA Standard C9
and C22.2 No. 47
Options : Temperature Rise
Sound Level
Radio Influence Voltage
Partial Discharges (Corona)
Basic Insulation Impulse Level

OPTIONAL ACCESSORIES
Thermometer (Dial, Digital, or Fiber Optic)
Fans
Electrostatic Shield
Tertiary/Multiple Output Windings
Power Supply Transformer
Lightning Arrestors
Mimic Diagram
Special Identification
Interlock Switch
etc.